Quantity of shingles?

Question

I have an estimate from a roofer on an insurance claim for 24 squares of shingles and installation. Given that the house is less than 1300 square feet with a low slope roof, is there a legitimate reason why they would have charged for double the roof area?

Given the pitch of 4 in 12, that would add about 18% to the SF of the roof, but the SF of floor space is total, there was one room in a converted garage that wasn't covered. All in all, it looks to me like 24 squares is twice the area actually covered. Does "one square of shingles" cover one square of roof or not?

Answer 1

Yes the quantity sounds about right. The slope of the roof adds square footage to the roof, you also have some amount of cut off waste in every row of shingles. Plus most homes have overhang.

Answer 2

1 square of shingle is equal to 100 square ft. Depending on your roof design, gables vallies etc, it may require more shingles.

2400 does seem rather much but a good contractor will only charge for as many squares as they use since they can return the extra to the distribution center.

Answer 3

It depends on the shape of your roof. Some roofers have done so many that they just look at a place and can guess pretty close to what they need. It does seem excessive though, but it is easy for me to say that without looking at your place. You can always get more than one estimate.

Answer 4

i always thought a square was three bundles which is 100 sq feet

24 squares should be 2400 sq feet

but maybe not

hmmmmm

i forget

good luck